IoT with ESP8266

1// Simple IoT using ESP8266 and your website
2// for more inf see moty22.co.uk
3
4#include  <SoftwareSerial.h>
5SoftwareSerial wifi(6, 5);      // RX, TX for ESP8266
6
7  
8  int analog=0, i=0;
9  String msg, host, d1;
10 
11const int str_len  = 100;
12char str_data[str_len]; 
13const char end_c = '*', start_c = '%'; //marking  the data part of the website reply
14  
15void setup()
16{
17  
18  pinMode(7,OUTPUT);
19  pinMode(3,INPUT_PULLUP);
20  wifi.begin(9600); //software serial
21  Serial.begin(9600);
22  // wifi.listen();
23  
24  wifi.println("AT+RST"); //reset wifi
25  delay(2000);
26  wifi.println("AT+CWMODE=1");  //station mode
27  delay(1000);
28   //connect  to AP, ADD YOUR ROUTER SSID and PASSWORD
29  wifi.println("AT+CWJAP=\\"SSID\\",\\"PASSWORD\\"");
30  delay(10000);
31  
32}
33 
34void loop()
35{
36    ++i;
37    if(i=2000){  
38    analog = analogRead(A0);
39    if(digitalRead(3)) {d1 = "OFF";} else  {d1 = "ON";}
40
41      //GET request of a website page a31.php 
42    msg  = "GET /a31.php?v1=" + String(highByte(analog)) + "&v2=" + String(lowByte(analog))  + "&v3=" + d1 + " HTTP/1.1";
43    host = "HOST: moty22.co.uk";  //change  to your website address
44    
45    wifi.println("AT+CIPSTART=\\"TCP\\",\\"moty22.co.uk\\",80");  //change to your website address
46    delay(1000);
47    wifi.println("AT+CIPSEND="  + String(msg.length() + host.length() + 6));
48    delay(1000);
49    
50    wifi.println(msg);
51    wifi.println(host);
52    wifi.println("");
53    i=0;
54    }
55      //get  reply from website
56    get_str();
57    Serial.println(str_data);
58    if(find(str_data,"output=ON")){digitalWrite(7,  HIGH); Serial.println("output=ON");} 
59    if(find(str_data,"output=OFF")){digitalWrite(7,  LOW); Serial.println("output=OFF");}
60    delay(10000);
61    
62}
63
64boolean  find(String string, String toFind){
65  if(string.indexOf(toFind)>=0) return true;
66    
67  return false;
68}
69
70void get_str(){
71  int i = 0;
72  bool begin_str=0;
73    
74  char c = read_c();
75  while(c != end_c){
76    if(i >= str_len) break;
77    if(c == start_c) { begin_str=1;}  
78    if (begin_str) {
79      str_data[i]  = c; 
80      i++;
81    }
82    c = read_c();
83    
84  }
85  str_data[i]  = '\\0';
86}
87
88char read_c(){
89  while(!wifi.available());
90  return wifi.read();
91}
92

1// Simple IoT using ESP8266 and your website
2// for more inf see moty22.co.uk
3
4#include
5  <SoftwareSerial.h>
6SoftwareSerial wifi(6, 5);      // RX, TX for ESP8266
7
8
9  
10  int analog=0, i=0;
11  String msg, host, d1;
12 
13const int str_len
14  = 100;
15char str_data[str_len]; 
16const char end_c = '*', start_c = '%'; //marking
17  the data part of the website reply
18  
19void setup()
20{
21  
22  pinMode(7,OUTPUT);
23
24  pinMode(3,INPUT_PULLUP);
25  wifi.begin(9600); //software serial
26  Serial.begin(9600);
27
28  // wifi.listen();
29  
30  wifi.println("AT+RST"); //reset wifi
31  delay(2000);
32
33  wifi.println("AT+CWMODE=1");  //station mode
34  delay(1000);
35   //connect
36  to AP, ADD YOUR ROUTER SSID and PASSWORD
37  wifi.println("AT+CWJAP=\\"SSID\\",\\"PASSWORD\\"");
38
39  delay(10000);
40  
41}
42 
43void loop()
44{
45    ++i;
46    if(i=2000){
47  
48    analog = analogRead(A0);
49    if(digitalRead(3)) {d1 = "OFF";} else
50  {d1 = "ON";}
51
52      //GET request of a website page a31.php 
53    msg
54  = "GET /a31.php?v1=" + String(highByte(analog)) + "&v2=" + String(lowByte(analog))
55  + "&v3=" + d1 + " HTTP/1.1";
56    host = "HOST: moty22.co.uk";  //change
57  to your website address
58    
59    wifi.println("AT+CIPSTART=\\"TCP\\",\\"moty22.co.uk\\",80");
60  //change to your website address
61    delay(1000);
62    wifi.println("AT+CIPSEND="
63  + String(msg.length() + host.length() + 6));
64    delay(1000);
65    
66    wifi.println(msg);
67
68    wifi.println(host);
69    wifi.println("");
70    i=0;
71    }
72      //get
73  reply from website
74    get_str();
75    Serial.println(str_data);
76    if(find(str_data,"output=ON")){digitalWrite(7,
77  HIGH); Serial.println("output=ON");} 
78    if(find(str_data,"output=OFF")){digitalWrite(7,
79  LOW); Serial.println("output=OFF");}
80    delay(10000);
81    
82}
83
84boolean
85  find(String string, String toFind){
86  if(string.indexOf(toFind)>=0) return true;
87
88    
89  return false;
90}
91
92void get_str(){
93  int i = 0;
94  bool begin_str=0;
95
96    
97  char c = read_c();
98  while(c != end_c){
99    if(i >= str_len) break;
100
101    if(c == start_c) { begin_str=1;}  
102    if (begin_str) {
103      str_data[i]
104  = c; 
105      i++;
106    }
107    c = read_c();
108    
109  }
110  str_data[i]
111  = '\\0';
112}
113
114char read_c(){
115  while(!wifi.available());
116  return wifi.read();
117}
118